bishop



2 Sheets-Sheet 1.

(No Model.)

T. BISHOP.

BOX COVERING MACHINE.

No. 595,768. Patented Dec. 21 1897.

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T. BISHOP. BOX COVERING MAUHINEL' 2 She ets-Sheet 2.

(No Model.)

Pa ented Dec. 21,1897.

NITED STATES rrrc 'ATENT BOX-COVERING 'MACHINE.

SPECIFICATION formingpart of Letters Patent No. 595,758, dated December21, 1897.

Application filed April '5, 1897. Serial No. 630,825. (No model.)

T on whom it may concern.-

Be it known that I, THOMAS BISHOP, a subj ect of the Queen of GreatBritain, and a resident of 44 Deritend, in the city of Birmingham,England, have invented certain new and useful Improvements in andRelating to Box- Covering Machines, of which the following is aspecification. I

This invention consists of improvements relating to box-coveringmachines, my object being to produce an expansible or segmentalsupporting-block having simple and effective means for ready adjustmentto the required size of box to be operated upon and to so construct andarrange such adjustable means or appliances that the block-segments canbe rigidly secured in any position to which they may be set within therange or limit of adjustment.

In order that my invention may be the more readily understood, I appendhereunto two sheets of explanatory drawings, to be hereinafter referredto.

Figure 1 is a sectional side elevation, Fig. 2 a sectional endelevation, and Fig. 3 a plan, of a supporting-block constructed inaccordance with my invention, the drawings illustrating the block at theminimum dimensions or compass for which it is constructed. Fig. 4 is aplan illustrating a method of stiffening or staying the box byextensions on the sliding arms, and Fig. 5 a sectional end elevation ofone pair of such arms through the line ab at Fig. 4. Fig. 6 is asectional side elevation, and Fig. 7 a sectional end elevation,representing the outer or angular segments of the box extended to the maximumrange of adjustment. Fig. 8 is an elevation to a larger scale,representing the construction of the telescopic joints of the segmentsand also the arrangement of the stops.

The same reference-letters in the different Views indicate the sameparts.

I employ a base or bridge piece or carrier, such as A, having its upperpart within the interior of the block-segments and provided with acentral aperture A through the lower part for the reception of theblock-spindle of the machine to which the block is to be attached. Inthe upper part of the base-piece A, I form a slot or slots A and suchslotted part supports a pair of double arms 13 B and C 0, each providedwith longitudinal slots. Each pair of double arms are secured to theslotted base or bridge piece or carrier A, preferably by a thumb-nut andbolt, as illustrated;

but on releasing the nuts the arms can be extended within the limits ofthe slot to suit the particular box to be operated upon. The adjustmentin the one direction is effected by the movement of the slotted armsrelatively to each other, and in the other direction by moving either orboth pairs of double arms along the slotted bridge. In Fig. 1 each pairof arms are at their innermost positions upon the slotted bridge A,whereas in Fig. 6 they are shown at their outermost positions. In thesame manner at Fig. 2 the arms B and C are shown at their innermostpositions, whereas at Fig. 7 they are represented at their outermostpositions.

One end of each of the arms B B O G is permanently attached, bysoldering or otherwise, to one of the outer or angular metal or otherplates or segments forming the boxblock, and thus as the arms are movedsuch segments partake of their movement, but when the arms are fixed bythe thumb-nuts the segments are rigidly secured in the positions towhich they have been adj usted.' The arms are secured to the angularsegments, and these telescope with the segments F F G G, which compriseflat body portions with tubular edges adapted to embrace and telescopewith similar tubular edges of the angular segments. The sliding ortelescopic segments are prevented from complete detachment from thecentral segments when in the outermost positions (illustrated at Figs. 6and 7) by means of stop-pegs D upon or adjacent to the ends of thesegments, such stop-pegs being formed from strips or lengths of wiresoldered or otherwise attached to their respective segments.

In constructing a box-block of large dimensions in accordance with myinvention I provide lateral extensions, asE E, Fig. 4, upon the slidingarms for the purpose of stiffening orstaying the adjustable segments.The telescopic joints of the segments are formed at the upper and lowerends of the plates by turning over such edges of the plates to a tubularform, such as shown more clearly in the detail View Fig. 8, the tube onone plate being arranged to slide within the tube of the adjacent plate.The tubes formed with the central plates or segments F F and G G on eachside are large or outer tubes, while the tubes formed with the angularplates or segments H H and J J are smaller or inner tubes arranged totelescope or slide within the outer tubes formed with the centralplates. It will thus be understood that the complete boxblock is made upof four central plates or segments and four angular plates or segments,each of the sliding arms B B and C 0 being rigidly attached to one ofsuch angular segments, which are themselves arranged to slide ortelescope upon the said central segments.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is i 1. The combination in a segmental blockfor a box-covering machine of slotted arms as B B and C C so mounted inpairs upon a slotted bridge-piece or carrier A that the two pairs can becaused to recede from or approach each other in one straight-linedirection, and the two arms of each pair to recede from or approach eachother in a straight-line direction at right angles to the movement ofthe arms in pairs, substantially as described.

2. In combination, the bridge-piece having a slot, the two pairs ofslotted arms thereon adjustable toward and from each other, the segmentscarried by the said arms, and the central segments telescopingtherewith, substantially as described.

3. In combination, the bridgepiece, the two pairs of arms adjustablethereon toward and from each other, said arms of each pair beingadjustable relatively to each other, the angular segments carried bysaid arms, the central segments telescoping with the angular segments,and the stops for limiting the movement of the segments, substantiallyas described.

-In witness whereof I have hereunto set my hand in presence of twowitnesses.

. THOS. BISHOP.

lVitnesses:

EDWARD MARKS, HERBERT BOWKETT.

